Firstly Obione, extra car, I now have a MK1 Ranger Rover 3.5 EFI. Secondly I don't know what the numbers on fuel saving are, to this end , please, please look at Fuel Cat, it de-carbonizes the engine as well as getting the fuel molicules to all point in the same direction when going into the explosion chamber, sounds daft but it ensures that ALL the fuel burns in the chamber, you'd be surprised how much fuel is wasted without a fuel cat or equivalent unit. The other articles ive been through, bit over my head, im very old school, on that point, how about a section for classic's only. But yes, splendid work my son, 10/10.